/**
* To autofocus on first form element or first element with error.
*
* @param string $name if this is set then the focus is forced to a field with this name
*
* @return string javascript to select form element with first error or
* first element if no errors. Use this as a parameter
* when calling print_header
*/
function focus($name = NULL)
{
$form =& $this->_form;
$elkeys = array_keys($form->_elementIndex);
if (isset($form->_errors) && 0 != count($form->_errors)) {
$errorkeys = array_keys($form->_errors);
$elkeys = array_intersect($elkeys, $errorkeys);
}
$names = null;
while (!$names) {
$el = array_shift($elkeys);
$names = $form->_getElNamesRecursive($el);
}
if (empty($name)) {
$name = array_shift($names);
}
$focus = 'forms[\'' . $this->_form->getAttribute('id') . '\'].elements[\'' . $name . '\']';
return $focus;
}
/**
* What to do when starting the form
*
* @param MoodleQuickForm $form reference of the form
*/
function startForm(&$form)
{
global $PAGE;
$this->_reqHTML = $form->getReqHTML();
$this->_elementTemplates = str_replace('{req}', $this->_reqHTML, $this->_elementTemplates);
$this->_advancedHTML = $form->getAdvancedHTML();
$this->_collapseButtons = '';
$formid = $form->getAttribute('id');
parent::startForm($form);
if ($form->isFrozen()) {
$this->_formTemplate = "\n<div class=\"mform frozen\">\n{content}\n</div>";
} else {
$this->_formTemplate = "\n<form{attributes}>\n\t<div style=\"display: none;\">{hidden}</div>\n{collapsebtns}\n{content}\n</form>";
$this->_hiddenHtml .= $form->_pageparams;
}
if ($form->is_form_change_checker_enabled()) {
$PAGE->requires->yui_module('moodle-core-formchangechecker', 'M.core_formchangechecker.init', array(array('formid' => $formid)));
$PAGE->requires->string_for_js('changesmadereallygoaway', 'moodle');
}
if (!empty($this->_collapsibleElements)) {
if (count($this->_collapsibleElements) > 1) {
$this->_collapseButtons = $this->_collapseButtonsTemplate;
$this->_collapseButtons = str_replace('{strexpandall}', get_string('expandall'), $this->_collapseButtons);
$PAGE->requires->strings_for_js(array('collapseall', 'expandall'), 'moodle');
}
$PAGE->requires->yui_module('moodle-form-shortforms', 'M.form.shortforms', array(array('formid' => $formid)));
}
if (!empty($this->_advancedElements)) {
$PAGE->requires->strings_for_js(array('showmore', 'showless'), 'form');
$PAGE->requires->yui_module('moodle-form-showadvanced', 'M.form.showadvanced', array(array('formid' => $formid)));
}
}
